package com.sky.controller.user;

import com.sky.entity.Dish;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@RestController("userDishController")
@RequestMapping("/user/dish")
@Slf4j
@Api(tags = "C端-菜品浏览接口")
public class DishController {

    @Autowired
    private DishService dishService;
    @Autowired
    private RedisTemplate redisTemplate;

    @GetMapping("/list")
    @ApiOperation("根据分类id查询菜品")
    public Result<List<DishVO>> getDishByCategoryIdWithFlavor(Long categoryId) {
        log.info("根据分类id查询菜品:{}", categoryId);

        //构造redis中的key，规则dish_分类id
        String key = "dish_" + categoryId;

        //查询redis中是否存在菜品数据
        List<DishVO> dishVOList = (List<DishVO>) redisTemplate.opsForValue().get(key);
        if(dishVOList != null && dishVOList.size() > 0) {
            //如果存在，直接返回，无需返回数据库
            return Result.success(dishVOList);
        }
        //如果不存在，查询数据库，并将查询到的数据存入redis中
        Long startTime = System.currentTimeMillis();
        dishVOList = dishService.getOnSaleByCategoryIdWithFlavor(categoryId);
//        Dish dish = Dish.builder()
//                .categoryId(categoryId)
//                .status(1)
//                .build();
//        dishVOList = dishService.list(dish);
        Long endTime = System.currentTimeMillis();
        log.info("总耗时:{}", (endTime - startTime));
        //存入redis
        redisTemplate.opsForValue().set(key, dishVOList);
        return Result.success(dishVOList);
    }

}
